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Due to fireworks and the lack of wind, the city's density of PM2.5, airborne particles smaller than 2.5 microns in diameter, hit a peak of 647 micrograms per cubic meter at 2 a.m. Saturday, down 7.6 percent from the same time of the last lunar new year, according to the Beijing Municipal Environmental Monitoring Center.

From Jan. 1, banks in Beijing raised mortgage rates for first home buyers. On Jan. 19, Shenzhen tied new home prices to the average price of houses on sale in the neighborhood. On Feb. 6, Chongqing also tightened its policy.

In 2017, China will cut the emissions of both sulfur dioxide and nitrogen oxide by 3 percent, and reduce PM2.5 density in key areas markedly, the report said.

Myasnikovich, chairman of the Council of Belarus's National Assembly, or the parliament speaker, made the remarks in an exclusive interview with Xinhua prior to a visit to Belarus by Zhang Dejiang, chairman of the Standing Committee of China's National People's Congress.

China's foreign trade has stabilized and returned to growth in recent months, but concerns are looming on rising trade protectionism in some countries that is likely to bring uncertainties to the outlook.